Andrew Boyson / net

A stack which works with or without an Mbed os library. Provides IPv4 or IPv6 with a full 1500 byte buffer.

Dependents:   oldheating gps motorhome heating

tcp/tcpbuf.c@145:206bf0d073c7, 2019-05-14 (annotated)

Committer:
andrewboyson
Date:
Tue May 14 15:09:39 2019 +0000
Revision:
145:206bf0d073c7
Parent:
79:f50e02fb5c94
Child:
146:0fc66d610fd6
Added a shim module between the web server and TCP to switch between http (direct) and https (tls).

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andrewboyson 61:aad055f1b0d1 1 #include <stdbool.h>
andrewboyson 61:aad055f1b0d1 2 #include <stdio.h>
andrewboyson 61:aad055f1b0d1 3
andrewboyson 54:84ef2b29cf7e 4 #include "http.h"
andrewboyson 54:84ef2b29cf7e 5
andrewboyson 79:f50e02fb5c94 6 static uint32_t currentPositionInMessage;
andrewboyson 79:f50e02fb5c94 7 static uint32_t bufferPositionInMessage;
andrewboyson 54:84ef2b29cf7e 8 static int bufferLength;
andrewboyson 54:84ef2b29cf7e 9 static char* pBuffer;
andrewboyson 54:84ef2b29cf7e 10 static char* p;
andrewboyson 54:84ef2b29cf7e 11
andrewboyson 79:f50e02fb5c94 12 void TcpBufStart(uint32_t position, int mss, char *pData)
andrewboyson 54:84ef2b29cf7e 13 {
andrewboyson 54:84ef2b29cf7e 14 currentPositionInMessage = 0;
andrewboyson 54:84ef2b29cf7e 15 bufferPositionInMessage = position;
andrewboyson 54:84ef2b29cf7e 16 bufferLength = mss;
andrewboyson 54:84ef2b29cf7e 17 pBuffer = pData;
andrewboyson 54:84ef2b29cf7e 18 p = pData;
andrewboyson 54:84ef2b29cf7e 19 }
andrewboyson 54:84ef2b29cf7e 20 int TcpBufLength()
andrewboyson 54:84ef2b29cf7e 21 {
andrewboyson 54:84ef2b29cf7e 22 return p - pBuffer;
andrewboyson 54:84ef2b29cf7e 23 }
andrewboyson 145:206bf0d073c7 24 bool TcpBufFilled()
andrewboyson 145:206bf0d073c7 25 {
andrewboyson 145:206bf0d073c7 26 return p - pBuffer >= bufferLength;
andrewboyson 145:206bf0d073c7 27 }
andrewboyson 54:84ef2b29cf7e 28
andrewboyson 54:84ef2b29cf7e 29 void TcpBufAddChar(char c)
andrewboyson 54:84ef2b29cf7e 30 {
andrewboyson 145:206bf0d073c7 31 //Add character if the current position is within the buffer
andrewboyson 145:206bf0d073c7 32 if (currentPositionInMessage >= bufferPositionInMessage &&
andrewboyson 145:206bf0d073c7 33 currentPositionInMessage < bufferPositionInMessage + bufferLength) *p++ = c;
andrewboyson 145:206bf0d073c7 34
andrewboyson 54:84ef2b29cf7e 35 currentPositionInMessage++;
andrewboyson 54:84ef2b29cf7e 36 }